Comfort is the main factor that leads to invention of heating, cooling and ventilation system. as per the need and comfort expected by people HVAC system is made by the human invention. There are five types in the HVAC systems such as single zone, multiple zone, constant volume, radiant and variable volume. Single zone type works well for single family homes and apartments where rooms share the heating and cooling vents. Multiple zone HVAC is perfect for people who are business owner of an apartment or building with multi storey. This type of HVAC system can provide heating and cooling service to several rooms or areas of an apartment or building. Next the cooling and heating systems are categorized into four types namely split systems, duct free split systems, packaged systems and hybrid type heat split systems. People can find these type of systems used in devices of various manufacturers. They can choose the system as per their need and budget.

Most of the traditional and typical air conditioning and heating systems comes under the type split systems. With the carrier split system people can have products residing on both outside and inside their home. hybrid type of split system is an energy efficient traditional air conditioning and cooling split system. Some of the components included in this type are heat pump, ducts and thermostat. Duct free split system types of devices can be installed by people in places where the conventional type of ducted systems cannot be installed. These are ideal complement to the ducted system. Individuals who have home that do not have space for installing a split system with multiple separate products can choose packaged type of HVAC systems. People who are going to install heating and cooling system in their home or business place should know about these types of HVAC system to choose the right one.